Black Night (Black Wings, #2)

In addition to all her personal issues, Maddy also has been ordered by Lucifer to play diplomat with the Faerie court. She and Nathaniel are going as a team to re-establish relations between Lucifer and Queen Amarantha (think Anita Blake and Meredith Gentry combined dealing with the Faerie court). Now you know that something will go terribly wrong. Well not just something, everything goes wrong and Maddy is furiously two-stepping to save her life and Gabriel's. Oh and let's not forget the other parties involved in this political nightmare: the Wolves (whom she has allied against Lucifer's wishes), Samiel (who is trying to kill her), Focalor (who is trying to depose Lucifer) and Antares (her half-brother who hates her because she is Azazel's heir and he is not).
But of course Maddy survives all the dangers and lives to have another agent of death adventure. I can't wait.